<template>
	<view>
		<view class="uni-header">
			<view class="uni-group">
				<view class="uni-title"></view>
				<view class="uni-sub-title"></view>
			</view>
			<view class="uni-group">
				<input class="uni-search" type="text" v-model="query" @confirm="search" placeholder="请输入搜索内容" />
				<button class="uni-button" type="default" size="mini" @click="search">搜索</button>
				<button class="uni-button" type="default" size="mini" @click="navigateTo('./add')">新增</button>
				<button class="uni-button" type="default" size="mini" :disabled="!selectedIndexs.length"
					@click="delTable">批量删除</button>
				<download-excel class="hide-on-phone" :fields="exportExcel.fields" :data="exportExcelData"
					:type="exportExcel.type" :name="exportExcel.filename">
					<button class="uni-button" type="primary" size="mini">导出 Excel</button>
				</download-excel>
			</view>
		</view>
		<view class="uni-container">
			<unicloud-db ref="udb" :collection="collectionList" field="_id,parent_id,merchant_id,name,sort,description,create_date"
				:where="where" page-data="replace" :orderby="orderby" :getcount="true" :page-size="options.pageSize"
				:page-current="options.pageCurrent" v-slot:default="{data,pagination,loading,error,options}"
				:options="options" loadtime="manual" @load="onqueryload">
				<uni-table ref="table" :loading="loading" :emptyText="error.message || '没有更多数据'" border stripe
					type="selection" @selection-change="selectionChange">
					<uni-tr>
						<uni-th align="center" filter-type="search" @filter-change="filterChange($event, 'name')"
							sortable @sort-change="sortChange($event, 'name')">类别名称</uni-th>
						<uni-th align="center" filter-type="search" @filter-change="filterChange($event, 'merchant_id')"
							sortable @sort-change="sortChange($event, 'merchant_id')">所属商户</uni-th>
						<uni-th align="center" filter-type="search" @filter-change="filterChange($event, 'parent_id')"
							sortable @sort-change="sortChange($event, 'parent_id')">父类别名称</uni-th>
						<uni-th align="center" filter-type="range" @filter-change="filterChange($event, 'sort')"
							sortable @sort-change="sortChange($event, 'sort')">排序</uni-th>
						<uni-th align="center" filter-type="search" @filter-change="filterChange($event, 'description')"
							sortable @sort-change="sortChange($event, 'description')">类别描述</uni-th>
						<uni-th align="center" filter-type="timestamp"
							@filter-change="filterChange($event, 'create_date')" sortable
							@sort-change="sortChange($event, 'create_date')">创建日期</uni-th>
						<uni-th align="center">操作</uni-th>

					</uni-tr>
					<uni-tr v-for="(item,index) in data" :key="index">
						<uni-td align="center">{{item.name}}</uni-td>
						<uni-td align="center">{{item.merchant_id && item.merchant_id.length > 0 ? item.merchant_id[0].name : ''}}</uni-td>
						<uni-td align="center">{{item.parent_id && item.parent_id.length > 0 ? item.parent_id[0].name : '无父类'}}</uni-td>
						<uni-td align="center">{{item.sort}}</uni-td>
						<uni-td align="center">{{item.description}}</uni-td>
						<uni-td align="center">
							<uni-dateformat :threshold="[0, 0]" :date="item.create_date"></uni-dateformat>
						</uni-td>

						<!-- <uni-td align="center">{{item.article_count}}</uni-td> -->
						<uni-td align="center">
							<view class="uni-group">
								<button @click="navigateTo('./edit?id='+item._id, false)" class="uni-button" size="mini"
									type="primary">修改</button>
								<button @click="confirmDelete(item._id)" class="uni-button" size="mini"
									type="warn">删除</button>
							</view>
						</uni-td>
					</uni-tr>
				</uni-table>
				<view class="uni-pagination-box">
					<uni-pagination show-icon :page-size="pagination.size" v-model="pagination.current"
						:total="pagination.count" @change="onPageChanged" />
				</view>
			</unicloud-db>
		</view>
	</view>
</template>

<script>
	import {
		enumConverter,
		filterToWhere
	} from '../../js_sdk/validator/opendb-mall-categories.js';

	const db = uniCloud.database()
	const dbCmd = db.command
	// 表查询配置
	const dbOrderBy = '' // 排序字段
	const dbSearchFields = ['name', 'merchant_id.name'] // 模糊搜索字段,支持模糊搜索的字段列表。联表查询格式: 主表字段名.副表字段名，例如用户表关联角色表 role.role_name
	// 分页配置
	const pageSize = 20
	const pageCurrent = 1

	const orderByMapping = {
		"ascending": "asc",
		"descending": "desc"
	}

	export default {
		data() {
			return {
				collectionList: "opendb-mall-categories,intangible_merchant",
				query: '',
				where: 'is_deleted == false || is_deleted == null',
				orderby: dbOrderBy,
				orderByFieldName: "",
				selectedIndexs: [],
				options: {
					pageSize,
					pageCurrent,
					filterData: {},
					...enumConverter
				},
				imageStyles: {
					width: 64,
					height: 64
				},
				exportExcel: {
					"filename": "opendb-mall-categories.xls",
					"type": "xls",
					"fields": {
						"parent_id": "parent_id",
						"类别名称": "name",
						"所属商户": "merchant_id",
						"排序": "sort",
						"类别描述": "description",
						"create_date": "create_date"
					}

				},
				exportExcelData: []
			}
		},
		onLoad() {
			this._filter = {}
		},
		onReady() {
			this.$refs.udb.loadData()
		},
		methods: {
      onqueryload(data) {
        console.log('load', data)
				this.exportExcelData = data
			},
			getWhere() {
				const query = this.query.trim()
				if (!query) {
					return ''
				}
				const queryRe = new RegExp(query, 'i')
				return dbSearchFields.map(name => queryRe + '.test(' + name + ')').join(' || ')
			},
			search() {
				const newWhere = this.getWhere()
				const isDeletedCondition = 'is_deleted == false || is_deleted == null'
				
				if (newWhere) {
					this.where = `(${isDeletedCondition}) && (${newWhere})`
				} else {
					this.where = isDeletedCondition
				}
				
				this.$nextTick(() => {
					this.loadData()
				})
			},
			loadData(clear = true) {
				this.$refs.udb.loadData({
					clear
				})
			},
			onPageChanged(e) {
				this.selectedIndexs.length = 0
				this.$refs.table.clearSelection()
				this.$refs.udb.loadData({
					current: e.current
				})
			},
			navigateTo(url, clear) {
				// clear 表示刷新列表时是否清除页码，true 表示刷新并回到列表第 1 页，默认为 true
				uni.navigateTo({
					url,
					events: {
						refreshData: () => {
							this.loadData(clear)
						}
					}
				})
			},
			// 多选处理
			selectedItems() {
				var dataList = this.$refs.udb.dataList
				return this.selectedIndexs.map(i => dataList[i]._id)
			},
			// 批量删除
			delTable() {
				const ids = this.selectedItems()
				if (ids.length === 0) {
					return
				}
				
				uni.showModal({
					title: '提示',
					content: `确定要删除选中的 ${ids.length} 个类别吗？`,
					success: (res) => {
						if (res.confirm) {
							// 批量软删除：修改 is_deleted 为 true
							const promises = ids.map(id => {
								return db.collection('opendb-mall-categories').doc(id).update({
									is_deleted: true
								})
							})
							
							Promise.all(promises).then(() => {
								uni.showToast({
									title: '删除成功',
									icon: 'success'
								})
								// 刷新列表
								this.$refs.udb.loadData()
								this.$refs.table.clearSelection()
							}).catch((err) => {
								uni.showModal({
									content: err.message || '删除失败',
									showCancel: false
								})
							})
						}
					}
				})
			},
			// 多选
			selectionChange(e) {
				this.selectedIndexs = e.detail.index
			},
			confirmDelete(id) {
				uni.showModal({
					title: '提示',
					content: '确定要删除该类别吗？',
					success: (res) => {
						if (res.confirm) {
							// 软删除：修改 is_deleted 为 true
							db.collection('opendb-mall-categories').doc(id).update({
								is_deleted: true
							}).then((res) => {
								uni.showToast({
									title: '删除成功',
									icon: 'success'
								})
								// 刷新列表
								this.$refs.udb.loadData()
								this.$refs.table.clearSelection()
							}).catch((err) => {
								uni.showModal({
									content: err.message || '删除失败',
									showCancel: false
								})
							})
						}
					}
				})
			},
			sortChange(e, name) {
				this.orderByFieldName = name;
				if (e.order) {
					this.orderby = name + ' ' + orderByMapping[e.order]
				} else {
					this.orderby = ''
				}
				this.$refs.table.clearSelection()
				this.$nextTick(() => {
					this.$refs.udb.loadData()
				})
			},
			filterChange(e, name) {
				this._filter[name] = {
					type: e.filterType,
					value: e.filter
				}
				let newWhere = filterToWhere(this._filter, db.command)
				
				// 始终添加 is_deleted 过滤条件
				const isDeletedCondition = 'is_deleted == false || is_deleted == null'
				
				if (Object.keys(newWhere).length) {
					this.where = `(${isDeletedCondition}) && (${JSON.stringify(newWhere)})`
				} else {
					this.where = isDeletedCondition
				}
				this.$nextTick(() => {
					this.$refs.udb.loadData()
				})
			}
		}
	}
</script>

<style>
</style>